The West Polesie Biosphere Reserve includes three landscape parks, among which for analysis the two most peripherally located and with similar surfaces were selected: the Łęczna Lakeland Landscape Park and Sobibór Landscape Park. The aim of the study was to identify and characterize small permanent water bodies with an area less than 1 ha. Research was mainly based on the method of retrospective photointerpretative analysis of land use forms using aerial photographs and satellite images. Due to the hydrogenic character of protected ecosystems, in the reserve we found nearly 3,000 small water bodies, and 223 in areas of landscape parks under study. These small water bodies have various origins, surfaces, and nature of direct surroundings.